For anyone else wondering, you can export all your Garmin data .Use the “Export All Garmin Data Using Account Management Center” option here https://support.garmin.com/en-US/?faq=W1TvTPW8JZ6LfJSfK512Q8 The output is json files so you can use any json editor or anything that can import json. I use a little tool called JQ https://jqlang.org/ to extract just things I need. Then I can analyze in whatever tool I want such as a spreadsheet

If you read the announcement from them you will see that they are not moving previously free features to paid, all of the previously free features are still free, they are adding some new paid features.